Corner-buckler for paper-sheet-feeding machines.



A. A. (if,v I. P. MANDELL. coENEE BUGKLEE EoE PAPER sEEET EEEDING MACHINES.

l V PPLITION FILED JAN. 29, 1908. 902,591 Patented Nov. 3, 1908. '2 SHEETS-SHEET l.

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A. A. & 1. F. MANDELL.

CORNER BUGKLER FOR PAPER SHEET PEEDING MAGHINBS.

APPLICATION FILED JAN. 29, 1908.

Patented Nov. 3, 1908.

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UNITED STATES PATENT OFFICE.

ARTHUR A. MANDELL, or BOSTON, AND iRviNe r. MANDELL, OF SOUTH FRAMINGHAM, MASSACHUSETTS.

CORNER-BUCKLER FOR PAPER-SHEET-FEEDING MACHINES.

Application filed January 29, 1908.

Specification of Letters Patent.

To all whom it may concern:

Be it known that we, ARTHUR A. MANDELL, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, and IRvrNG F. MANDELL, a citizen of the United States, residing at South Framingham, in the county of Middle- SeX and State of Massachusetts, have invented new and useful Improvements in Corner- Bucklers for Paper-Sheet-Feeding Machines, of which the following is a specification.

This invention relates to an improved corner buckling mechanism to be used in connection with mechanism for feeding sheets of paper from the top of a pile of Said sheets, and particularly relates to the mechanism for buckling the corners of the top sheet and thus separating the same from the sheets beneath, prior to the feeding off of the top sheet of said pile by other suitable feeding off mechanism. Said sheets are fed from the feeding off mechanism to a printing press, folding, calendering or ruling machine, as may be desired, and the device of this invention is duplicated at the two rear corners of the sheet which is to be fed.

The obj ect of the invention is to provide a device of the character set forth which will separate the corners ofthe top sheet of a pile of sheets of paper prior to the feeding off operation with precision and despatch.

The invention consists in the combination and arrangement of parte set forth in the following specification and particularly pointed out in the claims thereof.

Referring to the drawings: Figure 1 is a front elevation of our improved corner buckling mechanism, the same being partly broken away to save space. Fig. 2 is a sectional plan taken on line 22 of Fig. 1. Fig. 3 is a detail side elevation as viewed from the right. of Fig. 1.

Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 is a support for the pile of sheets 6.

7 is a portion of the frame of the sheet feeding machine and 8 is the frame upon which our improved corner buckling mechanism is supported. In the frame 8 is journaled a driving shaft 9, to the front end of which is fastened a cam 10. The cam 10 has a crank-pin 11 fast thereto and to this crankpin is connected a link or connecting rod 12 which, at its other end, is connected to the arm 13 of a slide 14 which is adapted to slide in ways 15 formed upon the frame 8. A connecting rod 16 is also mounted at one end thereof upon the crank-pin 11 and is connected at its outer end to a lever 17 pivoted at 18 to the frame 8, the lower arm of said lever having a stud 19 fast thereto, upon which is mounted one end of an arm 20, which isforked at 21, a pin 22 extending across between the arms 21, 21, upon which pin is rotatably mounted a primary buckler roll 23.

The primary buckler roll 23 bears against the top sheet 6 of the pile of sheets and adjacent thereto, in advance thereof, is located a guard linger 24, which is pressed in contact with the top of the sheet 6 by a spring 25 located in a recess in the arm 2O and bearing against a pin 26 which, in turn, is pressed against the guard finger 24 above the pin 22, thus tending to hold said guard iinger at its outer free end against the upper sheet of the pile of sheets 6.

A buckler finger 27 is provided to increase the buckling of the upper sheet 6 after the primary buckler roll 23 has separated said sheet to a certain extent from the sheet therebeneath. This buckler Finger consists of a lever 28 pivoted at 29 to the slide 14. Une end of said lever has a cam-roll 3() journaled thereon and held against the cam 10 by a spring 31, one end of which bears against a boss 32 upon the arm 13, the other end thereof bearing against a collar 33 fast to a rod 34.

Said rod is adapted to slide in the boss 32 at its upper end and at its lower end is connected to the lever 28, so that the spring 31 pushes downwardly upon the lever 28, thus holding the roll in contact with the periphery of the cam 10. The end of the lever 28 opposite to that upon which the roll 30 is journaled is forked at 35, 35 and these forks are provided with slots 36 in which rest the ends of a pin 37 which is held in position by split pins 38. A roll 39 is fastened to the pin 37 between the forks 35, 35 and to the rear end of said pin 37 is fastened an arm 4() which has an arm 41 pivotally connected thereto, said arm being pivoted at its opposite end at 42 to the frame 8.

The corner buckler stop or presser foot 43 is pressed against the pile of sheets 6 and is formed of several parts which together constitute a lever 44 pivoted at 45 to the frame 8.

Said lever has a cam roll 45 ournaled thereon and arranged to bear against the periphery of a cam 46, the same being held against said periphery by a torsional s ring 47.

The primary corner buck er roll 23 is pressed against the upper sheet 6 by a roll 48 which is journaled to a lever 49 pivoted at 50 to the frame of the machine and having a cam roll 51 journaled thereon and adapted to bear against the periphery of a cam 52 fast to the driving shaft 9. A torsional spiral spring 53 holds the roll 51 against the periphery of the cam 52, and as said cam rotates the lever 49 is rocked, so that the roll 48 bears against the flat portion 54 upon the upper side of the arm 20, thus pressing the roll 23 against the top of the pile of sheets.

Having thus specifically described our improved corner buckling apparatus, we will now proceed to describe the general operation of the same: Assuming the parts to be in the position illustrated in Fig. 1, with the presser foot 43 in contact with the upper sheet 6 and the primary corner buckler roll 23 advanced toward the left (Fig. 1), the upper sheet being thus separated from the sheets beneath by the rolling thereon of said corner buckler roll 23, a further rotation of the shaft 9 in the direction of the arrow (Fig. 1) will still further rotate the crank-pin 11 and, through the connecting rod 16, rock the lever 17, whereby the lower end of said lever 17 'will be moved toward the right and the arm 2O connected thereto will also be moved toward the right, thus moving the roll 23 toward the right upon the top of the pile of sheets. At this time in the operation of the device the roll 48 is moved away from the top of the arm 2O by the lever 49 and by the cam 52. The presser foot 43 is held down against the pile of sheets by the torsional spring 47. Upon further rotating the shaft the buckler finger 27 will move downwardly until the roll4 39 thereof contacts with the sheet of paper 6, which, being already separated from the sheet therebeneath, is easily pushed still farther therefrom by the movement toward the left of the buckler finger and by the rocking of the same upon the pin 37. This movement toward the left is accomplished by the movement of the lever 28, which, it will be remembered, is pivoted to the slide 14, and the slide 14 will be moved toward the left by the crank-pin 11 and connecting rod 12, which is connected to said slide by the arm 13 forming a portion thereof. As the lever 28 descends and the roll 39 contacts with the paper, said roll will be rocked, by means of the arm 4G and the connection 41, so that a combined reciprocatory and rocking movement is imparted to said guard finger which is, in effect, a four motion movement, the finger first descending from the position shown in Fig. 1 until the roll 39 contacts with the sheet 6, then moving toward the left to buckle the sheet, then moving upwardly and rearwardly to the position occupied in Fig. 1.

During the movement of the buckler iinger toward the left in the buckling operation of the up er sheet of paper, the primary buckler roll 23 and the guard finger 24 will be moving toward the right and at this time the pressure upon the roll 48 and, therefore, the pressure of the roll 23 against the upper sheet of aper will be released by the cam 52, which will rock the lever 49 and thus raise the roll 48 away from the flat surface 54 on the top of the arm 20. When the sheet 6 is released by the upward movement of the buckler finger 27, the edge of the sheet will move toward the guard finger and upwardly over said finger, which thus performs the function of preventing the up er sheet after having been buckled and re eased by the buckling mechanism, from passing beneath the roll 23 and being caught beneath said roll prior to the feeding 0H of the sheet. As soon as the buckler finger has moved upwardly, releasing the sheet 6 and allowing the same to slide backwardly over the guard finger 24, the presser foot or buckler stop 43 wil be lifted out of contact with the sheet 6, the feeding ofi` mechanism will move the sheet 6 off the pile of sheets to the printing press or other machine to which it may be fed, and the operation hereinbefore described will be repeated.

1t will be understood that in the operation hereinbefore described relating to the buckler finger, the spring 31 acts to keep the cam roll 30 against the periphery of the cam 10 while the roll 39 is out of contact with the sheet of paper, but when, in the operation hereinbefore described, the roll 39 is lowered until it contacts with the sheet of paper, then the cam 10 is so formed upon its periphery as to allow a space between the periphery thereof and the roll 30 so that the pressure of the s ring 31 is then applied to the roll 39, through the arm 28, so as to bring a spring pressure of the roll 39 against the sheet of paer. p Having thus described our invention, what we claim and desire by Letters Patent to secure is:

1. 1n a paper feeding mechanism, a support for the aper, a presser foot, instrumentalities a a ted to move said presser foot toward an away from said paper, a primary buckler roll, a spring-pressed guard inger located between said primary buckler roll and presser foot, said guard finger being movable simultaneously with said primary buckler roll and instrumentalities adapted to impart a reciprocatory motion to said primary buckler roll and guard finger.

2. In a paper feeding mechanism, a support for the paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said aper, a rimary buckler roll, a spring-pressed) guard ger located between said primary buckler roll and presser foot, said guard finger being movable simultaneously with said primary buckler roll, instrumentalities adapted to impart a reciprocatory motion to said primary buckler roll and guard finger, and means to press said roll against said paper.

3. ln a paper feeding machine, a support for sheets of paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said paper, a primary buckler roll, instrumentalities adapted to impart a reciprocatory motion to said primary roll while the same is in contact with said paper, a buckler finger, and mechanism adapted to move said buckler finger into contact With and across said pa er after the upper sheet of said paper has been buckled by said primary buckler roll.

4. ln a paper feeding machine, a support for sheets of paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said paper, a primary buckler roll, instrumentalities adapted to impart a reciprocatory motion to said primary roll while the same is in contact with said paper, a buckler finger, mechanism adapted to move said buckler finger into contact with and across said paper after the upper sheet of said pa er has been buckled by said primary buc iler roll, and means to press said roll against said paper.

5. In a paper feeding machine, a support for sheets of paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said paper, a primary buckler roll, instrumentalities adapted to impart a reciprocatory motion to said primary roll while the same is in contact with said paper, a spring-pressed guard linger adjacent to and in advance of said buckler roll, a buckler finger, and mechanism adapted to move said buckler finger into contact with and across said paper after the upper sheet of said paper has been buckled by said primary buckler roll. i

6. In a paper feeding machine, a support for sheets of paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said paper, a primary buckler roll, instrumentalities adapted to impart a reciprocatory motion to said primary roll while the same is in contact with said paper, means to press said roll against said paper, a spring-pressed guard finger adjacent to and in advance of said primary buckler roll, a buckler finger, and mechanism adapted to move said buckler nger into contact with and across said paper after the upper sheet of said paper has been buckled by said primary buckler roll.

7. In a paper feeding machine, a support for sheets of paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said paper, a primary buckler roll, instrumentalities adapted to impart a reciprocatory motion to said primary roll while the same is in contact with said paper, a buckler finger, and mechanism adapted to move said buckler iinger into contact with and across said paper in the opposite direction to that in which said buckler roll is moved upon its return movement.

8. In a paper feeding machine, a support for sheets of paper, a presser foot, instrumentalities adapted to move said presser foot toward and away from said paper, a primary buckler roll, a slide, a buckler finger mounted on said slide, mechanism to impart a rocking motion to said finger, a crank-pin, and instrumentalities connecting said crank-pin to said slide and to said primary buckler roll, whereby a reciprocatory motion is imparted to said buckler roll while the same is in contact with said pa er, and mechanism adapted to move said buc iler iinger into contact with and across said paper in the opposite direction to that in which said buckler roll is moved on its return movement.

In testimony whereof we have hereunto set out hands in presence of two subscribing witnesses.

ARTHUR A. MANDELL. IRVING F. MANDELL.

Witnesses:

CHARLES S. GooDrNG, LoUIs A. JONES. 

